Information unknown. Any info you can provide would be apprecated.
In 2004, I observed Motorola 900 MHz trunked system 5735 on frequencies licensed to this refinery under the callsign of WPKQ662. I can no longer find this system on the air. Any information you can provide on their current operations would be apprecated.
Update, 31 Jun 08: I cannot hear it from my home QTH, but a recent thread in the radioreference.com Utah Radio Discussion Forum indicates system 5375 is still active.
935.9125 935.925 935.95 935.9625 935.975
FCC License Callsign - WPQB734 Area Bit 1 01 463.3875 02 463.5625 03 463.5875 04 463.7375 05 464.7875 06 464.6875 07 464.3375 08 464.1625 09 Not presently in use, the table is either blank or the information is unknown. 10 Not presently in use, the table is either blank or the information is unknown. 11 Not presently in use, the table is either blank or the information is unknown. 12 Not presently in use, the table is either blank or the information is unknown. 13 Not presently in use, the table is either blank or the information is unknown. 14 Not presently in use, the table is either blank or the information is unknown. 15 Not presently in use, the table is either blank or the information is unknown. 16 Not presently in use, the table is either blank or the information is unknown. 17 Not presently in use, the table is either blank or the information is unknown. 18 Not presently in use, the table is either blank or the information is unknown. 19 Not presently in use, the table is either blank or the information is unknown. 20 Not presently in use, the table is either blank or the information is unknown.
102010 102011 102012 102013 102014 102016 102027 102028 102029 102031 102032 102040 102041 102042 102045 102056 102059
FCC License Callsign - WQHA883 Area Bit 1 01 461.8625 02 Not presently in use, the table is either blank or the information is unknown. 03 Not presently in use, the table is either blank or the information is unknown. 04 Not presently in use, the table is either blank or the information is unknown. 05 463.3625 06 Not presently in use, the table is either blank or the information is unknown. 07 Not presently in use, the table is either blank or the information is unknown. 08 Not presently in use, the table is either blank or the information is unknown. 09 463.9875 10 Not presently in use, the table is either blank or the information is unknown. 11 Not presently in use, the table is either blank or the information is unknown. 12 Not presently in use, the table is either blank or the information is unknown. 13 Not presently in use, the table is either blank or the information is unknown. 14 Not presently in use, the table is either blank or the information is unknown. 15 Not presently in use, the table is either blank or the information is unknown. 16 Not presently in use, the table is either blank or the information is unknown. 17 Not presently in use, the table is either blank or the information is unknown. 18 Not presently in use, the table is either blank or the information is unknown. 19 Not presently in use, the table is either blank or the information is unknown. 20 Not presently in use, the table is either blank or the information is unknown.
101102 101103 101104 101106
FCC License Callsign - WPYS240 Area Bit 0 01 461.7875 02 461.5625 03 462.35 04 Not presently in use, the table is either blank or the information is unknown. 05 Not presently in use, the table is either blank or the information is unknown. 06 Not presently in use, the table is either blank or the information is unknown. 07 Not presently in use, the table is either blank or the information is unknown. 08 Not presently in use, the table is either blank or the information is unknown. 08 Not presently in use, the table is either blank or the information is unknown. 10 Not presently in use, the table is either blank or the information is unknown. 11 Not presently in use, the table is either blank or the information is unknown. 12 Not presently in use, the table is either blank or the information is unknown. 13 Not presently in use, the table is either blank or the information is unknown. 14 Not presently in use, the table is either blank or the information is unknown. 15 Not presently in use, the table is either blank or the information is unknown. 16 Not presently in use, the table is either blank or the information is unknown. 17 Not presently in use, the table is either blank or the information is unknown. 18 Not presently in use, the table is either blank or the information is unknown. 19 Not presently in use, the table is either blank or the information is unknown. 20 Not presently in use, the table is either blank or the information is unknown.
001003 001004 001005 001006
Understanding LTR
If the concept of trunking is completely unfamiliar to you, start here first.
Typically, the display while receiving an LTR system will read something like: 102156
Interpreted, this means area bit 1, the fleet's home channel is 02, and the fleet's ID is 156.
The area bit can be either 0 or 1, and all channels in use by the trunking system will have the same area bit. If if a frequency has overlapping coverage between two LTR trunking systems (and there is a case of this in this area), one system must use 0, and the other 1.
Both the home channel and fleet ID identify the fleet. 102156 and 101156 would be two separate fleets.
102156 will home on the trunking system's channel 02, with the speaker silent until a radio on fleet 102156 begins transmitting. If channel 02 is being used by another fleet, and a user on fleet 102156 begins transmitting, the system will automatically (transparent to the users) send the fleet to one of the other channels.
Each LTR system has a unique table, which assigns a frequency to a channel number. Channel numbers are from 1-20, allowing an LTR system a maximum of 20 channels. The table is programmed into the system, and into each subscriber unit. Changing the table would require reprogramming every single radio on the system.
Any additional information you could provide on these systems would be appreciated.
This page last revised on Wednesday, 27 April 2011